Joule's law (also known as Joule effect) is a physical law expressing the relationship between the heat generated by the current flowing through a conductor. It is named for James Prescott Joule who studied the phenomenon in the 1840s. It is expressed as: A physical law, scientific law, or a law of nature is a scientific generalization based on empirical observations of physical behavior. ... In physics, heat is defined as energy in transit. ... In electricity, current refers to electric current, which is the flow of electric charge. ... In science and engineering, conductors are materials that contain movable charges of electricity. ... James Prescott Joule, FRS (December 24, 1818 – October 11, 1889) was an English physicist, born in Salford, near Manchester. ... 1840 is a leap year starting on Wednesday (link will take you to calendar). ...

Where Q is the heat generated by a constant current I flowing through a conductor of electrical resistance R, for a time t. Electrical resistance is a measure of the degree to which an electrical component opposes the passage of current. ... A pocket watch. ...

When current, resistance and time are expressed in amperes, ohms, and seconds respectively, are used the unit of Q is the joule. The ampere (symbol: A) is the SI base unit of electric current. ... The ohm (symbol: Ω) is the SI unit of electric resistance. ... Look up second in Wiktionary, the free dictionary. ... The word unit means any of several things: Unit of measurement, a fundamental quantity of measurement Units (computer program), a popular program that does unit conversion Units of energy, the units for energy measurements Units conversion by the Factor-label method Functional unit, a component of a computer system such... The joule (symbol: J) is the SI unit of energy, or work with base units of kg·m²/s² (N·m). ...

Joule's law is sometimes called the Joule-Lenz law since it was later independently discovered by Heinrich Lenz. The heating effect of conductors carrying currents is known as Joule heating. Heinrich Friedrich Emil Lenz (February 12, 1804 - February 10, 1865) was a Baltic German physicist most famous for formulating Lenzs law in 1833. ... In electronics, and in physics more broadly, Joule heating refers to the increase in temperature of a conductor as a result of resistance to an electrical current flowing through it. ...

See also: Peltier-Seebeck effect The Peltier-Seebeck effect, or thermoelectric effect, is the direct conversion of heat differentials to electric voltage and vice versa. ...